Phase composition, structure and mechanical properties of Ti-Dy-Si-Sn alloys

Phase composition, structure and mechanical properties of as-cast and annealed Ti-Dy-Si-Sn alloys were studied. Extremum values of high-temperature strength (511-529 MPa at 800 °C) and room-temperature plasticity (∼13% for compression) were found for annealed alloys (80-75)Ti-5Dy-5Si-(10-15)Sn. These were explained on the basis of phase composition and dispersity of the structure.